Public domain. Cover image from Project Gutenberg ebook #69386.
Origin of modern calculating machines
Chapters (11)
- Origin of Modern Calculating Machines: Foreword 0:00
- The Modern Accounting Machine 1:58
- The Early Key-Driven Art 12:35
- The Key-Driven Calculator 45:53
- Early Efforts in the Recording Machine Art 1:11:59
- First Practical Recorders 1:45:57
- Introduction of the Modern Accounting Machine 2:17:00
- The High-Speed Calculator 2:20:36
- The Improved Recorder 2:41:54
- The Bookkeeping and Billing Machine 2:58:02
- A Closing Word 3:14:59